Heater



Aug. 8, 1933. I J. H. LONG 1,921,532

HEATER Filed March 5, 1932 Patented Aug. 8, 1933 UNITED STATES EATENT OFFICE 1,921,532 HEATER Joseph H. Long, Cleveland, Ohio Application March 5, 1932. Serial No. 596,991

' 7 Claims. (c1. 12s-'-90 This invention relates to heaters and more particularly to a hot air heater which can be mounted in a room to be heated thereby or can be disposed in a basement or other portion of the building and connected to the rooms of the building by conventional conduits or the like.

An object of this invention is to provide a heater which is so constructed as to permit the use of combined heating means in the form of gas and electricity, coal and electricity, oil and electricity, or other heating means.

- Another object of this invention is to provide a heating unit which is so constructed as to quickly and cheaply heat air which passes through the device.

A further object of this invention is to provide a heating means of this kind which can be easily manufactured out of sheet metal or the like so that it can be manufactured at a relatively small cost. 1

The above and various other objects and advantages of this invention will in part be described in and in part be understood from the following detailed description of the present pre--' ferred embodiment, the same being illustrated in the accompanying drawing, wherein:

Figure 1 is a vertical section taken substantially through the center oi a device constructed according tothe preferred embodiment of this invention;

Figure 2 is a-similar view taken on the line 22 of Figure l. 7

Referring to the drawing wherein like numerals of reference designate corresponding parts throughout the several views, the numeral 10 designates generally an outer jacket or casing which is closed at the top 11 and is provided with an open bottom 13. This casing 10 is supported above a floor or the like by means of legs 12' which are disposed one at each corner of the casing orjacket 10 which, in the present instance, is constructed in substantially rectangular cross sectional form.

A combustion chamber, generally designated as 14, is mounted within the casing 10 at .substantially the bottom thereof, and this combustion chamber 14 has a burner 15 disposed therein, the burner 15 in the present instance being a gas burner which is, connected to a suitable source of gas supply 16 having a valve 17 disposed therein. A door or closure 18 is provided in the lower portion of the outer casing or jacket 10 for closing an opening 19, which opening also communicates with the interior of the combustion chamber 14. The combustion chamber 14 is provided with intake ports 20 so as topermit the passage of air into the combustion chamber, and the door 18 may also be provided with suitable dampers 21' of conventional construction.

The combustion chamber 14 comprising side walls 23 and 24,-which are formed with each side wall of the fire box, is disposed within the outer casing 10 with the side walls 23 and 24 positioned in inwardly spaced relation to the side walls of the casing 10. A top wall 25 is secured to the side walls 24 and an outlet pipe 26 is secured to this top wall 25, so that the burned gases or products of combustion may readily pass out of the combustion chamber 14.

The rear wall 27 of the combustion chamber 14 is cut away as at 27 at a point intermediate the upper and lower edges thereof and a wall 28 is secured to the rear wall 27 and to the front wall of the casing 10, thereby dividing the combustion chamber into upper and lower heating chambers 29 and 29, respectively. The upper chamber 29 is spaced upwardly from the lower chamber 14, and a chamber 30 having side walls 30 and 30 is provided for the purpose of permitting the cold air entering the bottom-of the casing 10 to pass upwardly and strike this top 28 of the chamber 30. The air chamber comprising the top and bottom walls 23 and 34, respectively, and side walls 39 and 30 extend en-- tirely across the combustion chamber 14 from front to rear but the'side walls 30 and 30 are disposed in spaced relation to the side walls 24 and 23, respectively, of the combustion chamber 14.

A plurality of ducts or pipes 31 are secured at one end to the wall 28 and at the other or upper end to the upper wall 25. These conduits 31 are open at each end and provide air passages by means of which the air may enter the chamber 30 and pass upwardly through the combustion chamber 22 for heating thereby and pass outwardly of the upper wall 25 from which point the heated air is permitted to pass out of the outer casing 10 through a grating 32' mounted on the wall of the casing or housing 10 adjacent the upper end thereof. In the present instance, there are provided two of these gratings 32, one on each side of the casing 10.

In order to more quickly heat the air passing upwardly through the conduits 31, I have provided a plurality of heating tubes or members 33 which are secured at the lower end thereof to the bottom wall 34 of the air chamber 30 andwhich extend upwardly through the tubes 31. The upper end of each tube 33 is connected to an upper CIDv heating member which is positioned at a point spaced upwardly from the top wall 25 of the combustion chamber 22.

The upper heating member 35 has a pipe 36 secured to the upper wall thereof, which pipe is connected to an outlet or smoke pipe 3? carried by the top of the outer casing 10. The outlet pipe 26 is connected at the upper end to the lower wall 38 of the upper heating member 35, so that the products of combustion from this chamber 22 may pass outwardly thereof and into the upper heating member 35 from which point they pass outwardly through the outlet pipe 36 and into the smoke pipe 37. The top wall 39 of the upper heating member 35 disposed in downwardly spaced relation to the top Wall 11 of the casing 10 so that the heated air which passes through the grating 32 into the room may circulate thereabout for heating purposes.

A second heating means in the form of an electrical heating member 40 is mounted on top wall 34 of the chamber 14 and is connected by means of wires 41 to a suitable source of current supply. A switch 42 is mounted on the casing 10 at a convenient point, this switch being interposed in the wires 41 so as to operate the electric heating member 40 either conjointly or separately from the heating member 15. referably, the heating member 40 is mounted on supporting lugs 43, which are carried by the top wall 34 of the fire box so that the heating member 40 will be disposed in upwardly spaced relation to the top wall of the fire box and will not become damaged through excessive heating of this bottom wall 34. In this manner also, the air may circulate through the bottom of the heating member 40 as it passes through the circulating passage 30.

The heating means herein disclosed is an improvement over the heating means disclosed in my pending application, Serial No. 574,196 filed November 10, 1931, and is a continuation in part of the invention comprised in that application.

In the use of this heater, the burner or heating unit 15 may be suitably lighted after turning on the Valve 1'7, and the heated air will pass upwardly through the outer jacket or casing 10 after entering the open lower end portion 13 thereof, as shown by arrows in the drawing. The gases from the chamber 14 will pass upwardly through the conduits or tubes 33 and as these gases are hot, the tubes 33 will be heated and the air disposed about the periphery of these tubes and within the tubes 31 will become rapidly heated. The burned gases will enter the upper heating member 35 and pass outwardly thereof through the outlet pipe 36 and into the smoke pipe 37.. The burned gases will also pass about the periphery of the tubes 33, as disclosed in Figure 2 of the drawing, and will pass out of the combustion chamber or inner casing 22 through the outlet pipe 26. The supplemental or additional heating means in the form of the electric heating unit 40 may also be used to heat the air in the jacket 10, so that any desired quantity of air may be heated to the desired degree.

While I have shown the burner 15 in the chamber 14 as being a gas burner, I do not wish to be limited to this construction, as this burner 15 may be either an oil burner or it may be entirely eliminated and coal used in the chamber 14. Where coal is used, the passages or openings 20 in the chamber 14 will, of course, be eliminated and the coal or other heating means passed into the chamber 14 through the door 18, and preferably the chamber 14 will be made out of cast iron which is heavy enough to resist the heat of the coal so that it will not crack or otherwise become injured thereby.

It will be noted from the foregoing that an exceedingly efiicient and quick heating means has been disclosed which will heat the air to the desired degree without having any of the prod nets of combustion pass into the room and either or both of the heating members 15 and 40 may be used at one time.

It is, of course, understood that various changes and modifications may be made in the details of construction and design of the above specifically described embodiment of this inven-- tion without departing from the spirit thereof, such changes and modifications being restricted .only by the scope of. the following claims.

disposed adjacent the bottom of the combustion chamber.

2. A heater comprising an outer jacket having an open bottom and an outlet adjacent the top, legs for mounting the jacket above a floor to permit the air to enter the jacket through the open i bottom, a combustion chamber supported within the jacket, an outlet for the combustion chamber, vertically disposed tubes extending through the combustion chamber and communicating at each end with the interior of the jacket, heater tubes extending through the first tubes and terminating at one end adjacent the bottom of the combustion chamber and having communication at the opposite end with the combustion chamber outlet, said second tubes having the periphery thereof spaced from the inner surface of the first tubes to permit air to freely circulate thereabout, and a heating unit within the combustion chamber.

3. A heater comprising an outer jacket having an open bottom and an outlet adjacent the top, means for supporting the jacket above a floor to permit air to freely enter the open bottom, a combustion chamber supported within the jacket and 7 having the top spaced downwardly from the top of the outer jacket, an outlet for the combustion chamber, an air chamber within the combustion chamber and communicating with the interior of the jacket, vertically extending air ducts communicating at one end with the air chamber and l at the opposite end with the interior of the jacket, 21. second series of heating tubes extending through said ducts and said air chamber and opening at one end into the combustion chamber and at the opposite end communicating with the combustion chamber outlet, and: heating means for heating air within the outer jacket. 1

4. A. heater comprising an outer jacket havin an open bottom and an outlet adjacent the top,

a gratingdisposed across the outlet, a combustion to the air chamber and at the opposite end discharging into the interior of the jacket, and heating means disposed within the air ducts and com municating with the combustion chamber for heating the air ithin the ducts.

5. A heater comprising anouter jacket having an open bottom and an outlet adjacent the top,

a combustion chamber supported in the jacket,

an outlet for the combustion chamber, an air chamber in the combustion chamber communicating with the interior of the jacket, air ducts extending through the combustion chamber and connected at one end to the air chamber and at the opposite end discharging into the interior of the jacket adjacent the outlet thereof, heating means extending through the air ducts for heating the air passing vertically therethrough, and a second heating means disposed above the combustion chamber and communicating therewith and connected to said first heating means.

6. A heater comprising an outer jacket having an open bottom and an outlet adjacent the top thereof, means for supporting the jacket above a floor to permit the free circulation of air through the open bottom, a combustion chamber supported within the jacket, an air chamber extending horizontally through the combustion chamber and dividing said combustion chamber into upper and lower combustion chambers, air ducts connected at one end to the air chamber and extending through the upper combustion chamber and opening into the interior of the jacket adjacent the top thereof, heating means connected at one end to the lower combustion chamber and extending vertically through the air ducts for heating the air passing therethrough, an upper heating member supported above the combustion chamber intermediate the top of said latter chamber and the top of the jacket, means connecting said upper heating member with the combustion chamber, an outlet for said upper heating member, said air duct heating means being connected at the upper ends thereof to said upper heating member.

7. A heater comprising an outer jacket having an open bottom and an outlet adjacent the top thereof, means for'supporting the jacket above a fioor to permit the air to freely enter the open bottom, a combustion chamber supported within the jacket, an air chamber extending horizontally through said combustion chamber and opening at one end into the interior of the jacket whereby to permit the air entering the open bottom to pass into the air chamber, air ducts connected at one end to theair chamber andextending upwardly therefrom through the combustion chamber and discharging at the upper ends thereof into the interior of the jacket, a heating means within the air ducts, said heating means extending downwardly through said air ducts and through said air chamber, a second heating means within the air chamber, a casing supported above the combustion chamber in spaced relation to said combustion chamber and the top of the jacket, connecting means connecting the casing with the combustion chamber, and an outlet connected to said casing and extending through the jacket.

JOSEPH H. LONG. 

